Add capability to manager memory in discontiguous regions.

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@35 42af7a65-404d-4744-a932-0658087f49c3

arch/README.txt

@@ -78,6 +78,10 @@ defconfig -- This is a configuration file similar to the Linux
 		CONFIG_DEBUG_VERBOSE - enables verbose debug output
 		CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
 		  time console output
+		CONFIG_MM_REGIONS - If the architecture includes multiple
+		  regions of memory to allocate from, this specifies the
+		  number of memory regions that the memory manager must
+		  handle and enables the API mm_addregion(start, end);
 		CONFIG_RR_INTERVAL - The round robin timeslice will be set
 		  this number of milliseconds;  Round robin scheduling can
 		  be disabled by setting this value to zero.

arch/c5471/defconfig

@@ -81,6 +81,10 @@ CONFIG_UART_MODEM_2STOP=0
 #   that will be used in the build
 # CONFIG_DEBUG - enables built-in debug options
 # CONFIG_DEBUG_VERBOSE - enables verbose debug output
+# CONFIG_MM_REGIONS - If the architecture includes multiple
+#   regions of memory to allocate from, this specifies the
+#   number of memory regions that the memory manager must
+#   handle and enables the API mm_addregion(start, end);
 # CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
 #   time console output
 # CONFIG_RR_INTERVAL - The round robin timeslice will be set
@@ -100,6 +104,7 @@ CONFIG_UART_MODEM_2STOP=0
 CONFIG_EXAMPLE=ostest
 CONFIG_DEBUG=y
 CONFIG_DEBUG_VERBOSE=n
+CONFIG_MM_REGIONS=1
 CONFIG_ARCH_LOWPUTC=y
 CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_INSTRUMENTATION=n

arch/pjrc-8051/defconfig

@@ -48,6 +48,10 @@ CONFIG_ARCH_8051=y
 #   that will be used in the build
 # CONFIG_DEBUG - enables built-in debug options
 # CONFIG_DEBUG_VERBOSE - enables verbose debug output
+# CONFIG_MM_REGIONS - If the architecture includes multiple
+#   regions of memory to allocate from, this specifies the
+#   number of memory regions that the memory manager must
+#   handle and enables the API mm_addregion(start, end);
 # CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
 #   time console output
 # CONFIG_RR_INTERVAL - The round robin timeslice will be set
@@ -67,8 +71,9 @@ CONFIG_ARCH_8051=y
 CONFIG_EXAMPLE=ostest
 CONFIG_DEBUG=n
 CONFIG_DEBUG_VERBOSE=n
+CONFIG_MM_REGIONS=2
 CONFIG_ARCH_LOWPUTC=y
-CONFIG_RR_INTERVAL=200
+CONFIG_RR_INTERVAL=0
 CONFIG_SCHED_INSTRUMENTATION=n
 CONFIG_TASK_NAME_SIZE=0
 CONFIG_START_YEAR=2007

arch/pjrc-8051/src/up_allocateheap.c

@@ -78,3 +78,10 @@ void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
   *heap_start = (FAR void*)UP_HEAP1_BASE;
   *heap_size = UP_HEAP1_END - UP_HEAP1_BASE;
 }
+
+#if CONFIG_MM_REGIONS > 1
+void up_addregion(void)
+{
+  mm_addregion((FAR void*)UP_HEAP2_BASE, UP_HEAP2_END - UP_HEAP2_BASE);
+}
+#endif

arch/pjrc-8051/src/up_assert.c

@@ -75,6 +75,6 @@ void up_assert(void)
 
 void up_assert_code(int errorcode)
 {
-  dbg("Assertion failed with error code: %d\n", errcode);
+  dbg("Assertion failed with error code: %d\n", errorcode);
   exit(errorcode);
 }

arch/pjrc-8051/src/up_initialize.c

@@ -93,6 +93,12 @@ void up_initialize(void)
 
   g_irqtos = 0;
 
+  /* Add extra memory fragments to the memory manager */
+
+#if CONFIG_MM_REGIONS > 1
+  up_addregion();
+#endif
+
   /* Initialize the interrupt subsystem */
 
   up_irqinitialize();

arch/pjrc-8051/src/up_internal.h

@@ -102,7 +102,9 @@
  * when the following simple addtions do the job).
  */
 
+#ifndef __ASSEMBLY__
 sfr at 0xc9 T2MOD ;
+#endif
 
 /* Timing information.
  *
@@ -175,9 +177,12 @@ extern ubyte g_irqtos;
 
 #ifndef __ASSEMBLY__
 
+#if CONFIG_MM_REGIONS > 1
+extern void  up_addregion(void);
+#endif
 extern void  up_irqinitialize(void);
 extern void  up_restorecontext(FAR struct xcptcontext *context);
-extern void up_restorestack(FAR struct xcptcontext *context);
+extern void  up_restorestack(FAR struct xcptcontext *context);
 extern ubyte up_savecontext(FAR struct xcptcontext *context);
 extern void  up_savestack(FAR struct xcptcontext *context);
 extern void  up_timerinit(void);

arch/pjrc-8051/src/up_putc.c

@@ -48,7 +48,7 @@
 
 static void _up_putc(int ch) __naked
 {
-#if 0
+#if 1
   ch; /* To avoid unreferenced argument warning */
   _asm
         mov     a, dpl
@@ -73,6 +73,10 @@ cout:   jnb     ti, cout
 int up_putc(int ch)
 {
   _up_putc(ch);
+  if (ch == '\n')
+    {
+      _up_putc('\r');
+    }
   return ch;  
 }
 

arch/sim/defconfig

@@ -48,6 +48,10 @@ CONFIG_ARCH_SIM=y
 #   that will be used in the build
 # CONFIG_DEBUG - enables built-in debug options
 # CONFIG_DEBUG_VERBOSE - enables verbose debug output
+# CONFIG_MM_REGIONS - If the architecture includes multiple
+#   regions of memory to allocate from, this specifies the
+#   number of memory regions that the memory manager must
+#   handle and enables the API mm_addregion(start, end);
 # CONFIG_HAVE_LOWPUTC - architecture supports low-level, boot
 #   time console output
 # CONFIG_RR_INTERVAL - The round robin timeslice will be set
@@ -67,6 +71,7 @@ CONFIG_ARCH_SIM=y
 CONFIG_EXAMPLE=ostest
 CONFIG_DEBUG=y
 CONFIG_DEBUG_VERBOSE=y
+CONFIG_MM_REGIONS=1
 CONFIG_ARCH_LOWPUTC=y
 CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_INSTRUMENTATION=n